Feb 3, 2019 17:07
5 yrs ago
English term

tonal

English to French Tech/Engineering Engineering (general)
Bonsoir,

Les amateurs d'ascenseurs parmi vous ont-ils déjà rencontré ce terme ? Impossible de trouver un équivalent en français.
Ex. : Poor adjustment or lubrication of slide guides results in persistent noise or vibration that is not strongly tonal. (->Tonal vibration).

Merci d'avance.
Proposed translations (French)
3 +2 sans tonalité particulièrement prononcée
4 -1 (vibrations peu) sonores

Discussion

Tony M Feb 3, 2019:
@ Asker This is a general term, not really specifically to do with lifts; it is used a lot in both acoustics and also vibration study.
'Tonal' means that the sound or vibration tends to have one or more prominent frequencies — a hum, whine, squeal, etc. Of course, vibration will probably be at sub-audio frequencies — but the same principle applies. In acoustic terms, a noise that is tonal ill tend to be more irritating / stand out more from the background than one that is more broadband or frequency-diffuse.
Thus conversely, 'not strongly tonal' means that the sound / vibration does not have a strong component at any particular frequency(ies).
When somethng IS tonal, it usually makes it easier to analyse and diagnose the source of the problem!
Do note, however, that 'not strongly tonal' has nothing whatever to do with the actual amplitude of the vibrations: whether they are weak or strong! It is all about their character.

Proposed translations

+2
13 hrs
English term (edited): not strongly tonal
Selected

sans tonalité particulièrement prononcée

Difficult to find refs., but this one looks as if it might be related (subject to verification):

For this reason the total signal is divided into 13 tonal ranges (mel scale).
resource.boschsecurity.com

C'est la raison pour laquelle le signal total est divisé en 13 gammes de tonalité (échelle de Mel).
resource.boschsecurity.com

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Note added at 13 hrs (2019-02-04 06:44:13 GMT)
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Here's another ef; that looks even closer in context and would probably be worth investigating:

Option d'évaluation de tonalité pour sonomètres – Brüel & Kjær Sound ...

https://www.bksv.com/fr...vibration.../bz-7231-tone-assessme...

Une application pour sonomètre permettant l'évaluation objective de tonalité, ... pour sonomètres et les appareils de mesure de vibrations BZ-7223 - Module ...


Brüel & Kjær are some of the top specialists in sound and vibration measurement and analysis.
Note from asker:
Thank you!
Peer comment(s):

agree Daryo : IOW there is no dominant sound frequency it doesn't sound like a tone more like noise
11 hrs
Exactly! And by extension, the same principle works for vibration too.
agree Johannes Gleim : Noise not showing distinct harmonics.
14 hrs
Danke, Johannes! Exactly!
Something went wrong...
4 KudoZ points awarded for this answer.
-1
10 mins

(vibrations peu) sonores

..

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Note added at 10 mins (2019-02-03 17:17:49 GMT)
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"Noise and Vibration Control - Page 2-3 - Google Books Result
https://books.google.be/books?id=4rIXAAAAYAAJ
1995 - ‎Machinery
Region B: Noise-induced vibration levels in lightweight wall and ceiling constructions ... and there are no raucous, unpleasant sounds or strongly tonal sounds."
Peer comment(s):

neutral Tony M : Your ref. is right, but I'm not sure about your interpretation; in vibration terminology, 'tonal' means tending to have a dominant frequency (-ies) [can help diagnosis] non-tonal means disparate, no particular frequencies / broadband
5 mins
disagree Daryo : the (not) "strongly" is about the distribution of frequencies (not strongly grouped), not about the amplitude of the sound waves
1 day 1 hr
Something went wrong...
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